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In India with object of enabling the cultivators to get proper price for their fibre, Bureau of Indian Standards (BIS) introduced a standard for grading of raw jute on the basis of its quality. Both white and tossa jute fibres are classified into eight grades, W1-W8, and TD1-TD8. Each grade is assessed by scoring six characters - strength, fineness, defects, root contents, colour and density. 

Grades and grading of White Jute (W) and Tossa Jute (TD) in India

Grade

Characteristics

W1/TD1 

Very good strength and colour, very fine heavy bodied fibre, free from major and minor defects. Maximum root content: W1-10%, TD1-5%.

W2/TD2

Good strength and colour, fine heavy bodied fibre, free from major and minor defects. Maximum root content: W2-15%, TD2-10%.

W3/TD3

Fairly good colour and strength well separated medium bodied fibre, free from major and minor defects except a few specks. Maximum root content: W3-20%, TD3-15%.

W4/TD4

Fair, average strength and colour, well separated medium bodied fibre, free from major defects and substantially free from specks and loose sticks. Maximum root content: W4-26 % , TD4-20 % .

W5/TD5

Average strength and colour, fine from major defects. Maximum root content: W5-36%, TD5-26%.

W6/TD6

Average strength, free from centre root and dazed/over-retted fibre and reasonably free from entangled sticks. Maximum root content: W6-46%, TD6 - 35%.

W7/TD7

Weak mixed fibre with maximum root content :W7-57%. TD7-35%.

W8/TD8

Entangled or any other jute not suitable for any of the above grade but of commercial value.

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